It's hopeless to give what exact settings you should put your camera on.
I would suggest, you run at F/4 if the image quality is good enough. Then you do trail and error with shutterpriority (TV). I would guess, you have a shutter of 1/800 to 1/1000 to completely frezze every movement of the tennis player. I prefer tennis pictures, where the tennis player is frozen completly but movements from the tennis ball are visable. To get movements of the tennis ball, that's all about trail and error.

1) Use Shutterpriority (TV)
2) Adjust with ISO, until you get the "correct" shuttertime

Regarding what foucspoint to use, I would guess center or top. Depends how you would like to frame the picture. Keep focus on the head/eye, but remember to use autofocus on AI servo. I'm using 400D, but I get better image quality by using One Shot, but when the subject is moving AI servo would be the better choice. Try with different settings.
I don't have any strong opinion regarding to you filters. Under/over compensate if that's a problem